719A - Vitya in the Countryside - CodeForces Solution

#include<bits/stdc++.h>
using namespace std;
int main()
{
    long long n;
    cin>>n;
    vector<long long>v(n);
    for(int i=0;i<n;i++) cin>>v[i];

    long long check=0;
    if(n==1)
    {
        if(v[0]==0)
            cout<<"UP"<<endl;
            else if(v[0]==15)
                cout<<"DOWN"<<endl;
        else
            cout<<-1<<endl;
    }
    else
    {
        if(v[n-1]==15)
            cout<<"DOWN"<<endl;
        else if(v[n-1]==0)
            cout<<"UP"<<endl;
        else if(v[n-1]>v[n-2])
        {
            cout<<"UP"<<endl;

        }

         else if(v[n-1]<v[n-2])
        {
            cout<<"DOWN"<<endl;

        }
    }
}